@@ -24,6 +24,9 @@ MODULE_LICENSE("GPL");
#include "hid-ids.h"
+#define MAX_SLOTS 60
+#define MAX_TRKID 59
+
struct mmm_finger {
__s32 x, y, w, h;
__u8 rank;
@@ -31,8 +34,9 @@ struct mmm_finger {
};
struct mmm_data {
- struct mmm_finger f[10];
+ struct mmm_finger f[MAX_SLOTS];
__u8 curid, num;
+ __u8 nexp, nreal;
bool touch, valid;
};
@@ -93,7 +97,7 @@ static int mmm_input_mapping(struct hid_device *hdev, struct hid_input *hi,
1, 1, 0, 0);
return 1;
case HID_DG_CONTACTID:
- field->logical_maximum = 59;
+ field->logical_maximum = MAX_TRKID;
hid_map_usage(hi, usage, bit, max,
EV_ABS, ABS_MT_TRACKING_ID);
return 1;
@@ -133,7 +137,7 @@ static void mmm_filter_event(struct mmm_data *md, struct input_dev *input)
* we need to iterate on all fingers to decide if we have a press
* or a release event in our touchscreen emulation.
*/
- for (i = 0; i < 10; ++i) {
+ for (i = 0; i < MAX_SLOTS; ++i) {
struct mmm_finger *f = &md->f[i];
if (!f->valid) {
/* this finger is just placeholder data, ignore */
@@ -190,6 +194,7 @@ static void mmm_filter_event(struct mmm_data *md, struct input_dev *input)
} else if (released) {
input_event(input, EV_KEY, BTN_TOUCH, 0);
}
+ input_sync(input);
}
/*
@@ -223,10 +228,12 @@ static int mmm_event(struct hid_device *hid, struct hid_field *field,
md->f[md->curid].h = value;
break;
case HID_DG_CONTACTID:
+ value = clamp_val(value, 0, MAX_SLOTS - 1);
if (md->valid) {
md->curid = value;
md->f[value].touch = md->touch;
md->f[value].valid = 1;
+ md->nreal++;
}
break;
case HID_GD_X:
@@ -238,7 +245,12 @@ static int mmm_event(struct hid_device *hid, struct hid_field *field,
md->f[md->curid].y = value;
break;
case HID_DG_CONTACTCOUNT:
- mmm_filter_event(md, input);
+ if (value)
+ md->nexp = value;
+ if (md->nreal >= md->nexp) {
+ mmm_filter_event(md, input);
+ md->nreal = 0;
+ }
break;
}
}
@@ -255,6 +267,8 @@ static int mmm_probe(struct hid_device *hdev, const struct hid_device_id *id)
int ret;
struct mmm_data *md;
+ hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
+
md = kzalloc(sizeof(struct mmm_data), GFP_KERNEL);
if (!md) {
dev_err(&hdev->dev, "cannot allocate 3M data\n");